"But... I am so lucky to live in a country where a girl like me can make this kind of living, achieve her dreams and reach her goals. And I don't think anywhere else in the world can girls have the freedom that we do here to have these amazing careers and be mothers."

Pompeo's character Meredith is also a mother on the show, to baby Zola played by twin girls. "Those babies are amazing," she added. "They seem to know when the camera is on them.

"When we were trying to get her to walk, and they're really on the verge of walking, and just when the camera was on her, she just stood up and walked across the room! It was really a real moment and so it really has been fun."